Which time-based description of a stage of development in ...

[leo leo]

Which time-based description of a stage of development in pregnancy is accurate?
 
  a. Viability22 to 37 weeks since the last menstrual period (LMP) (assuming a fetal weight >500 g)
  b. Termpregnancy from the beginning of week 38 of gestation to the end of week 42
  c. Pretermpregnancy from 20 to 28 weeks
  d. Postdatepregnancy that extends beyond 38 weeks

Question 2

A 31-year-old woman believes that she may be pregnant. She took an OTC pregnancy test 1 week ago after missing her period; the test was positive.
 
  During her assessment interview, the nurse inquires about the woman's last menstrual period and asks whether she is taking any medications. The woman states that she takes medicine for epilepsy. She has been under considerable stress lately at work and has not been sleeping well. She also has a history of irregular periods. Her physical examination does not indicate that she is pregnant. She has an ultrasound scan, which reveals that she is not pregnant. What is the most likely cause of the false-positive pregnancy test result?
  a. She took the pregnancy test too early.
  b. She takes anticonvulsants.
  c. She has a fibroid tumor.
  d. She has been under considerable stress and has a hormone imbalance.

[honnalora]

Answer to Question 1

ANS: B
Term is 38 to 42 weeks of gestation. Viability is the ability of the fetus to live outside the uterus before coming to term, or 22 to 24 weeks since LMP. Preterm is 20 to 37 weeks of gestation. Postdate or postterm is a pregnancy that extends beyond 42 weeks or what is considered the limit of full term.

Answer to Question 2

ANS: B
Anticonvulsants may cause false-positive pregnancy test results. OTC pregnancy tests use enzyme-linked immunosorbent assay technology, which can yield positive results 4 days after implantation. Implantation occurs 6 to 10 days after conception. If the woman were pregnant, she would be into her third week at this point (having missed her period 1 week ago). Fibroid tumors do not produce hormones and have no bearing on hCG pregnancy tests. Although stress may interrupt normal hormone cycles (menstrual cycles), it does not affect human chorionic gonadotropin levels or produce positive pregnancy test results.

[leo leo]

Excellent

[Liamb2179]

Gracias!